CN202331192U - Fault comprehensive diagnosis circuit of hydraulic support electrohydraulic control system - Google Patents
Fault comprehensive diagnosis circuit of hydraulic support electrohydraulic control system Download PDFInfo
- Publication number
- CN202331192U CN202331192U CN2011204140027U CN201120414002U CN202331192U CN 202331192 U CN202331192 U CN 202331192U CN 2011204140027 U CN2011204140027 U CN 2011204140027U CN 201120414002 U CN201120414002 U CN 201120414002U CN 202331192 U CN202331192 U CN 202331192U
- Authority
- CN
- China
- Prior art keywords
- circuit
- control system
- hydraulic support
- electrohydraulic control
- support electrohydraulic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Abstract
The utility model discloses a fault comprehensive diagnosis circuit of a hydraulic support electrohydraulic control system, which comprises a voltage detection circuit, a current detection circuit, a fieldbus data transmission and communication state detection circuit and a keyboard and liquid crystal display interface processing circuit. The voltage detection circuit is used for detecting direct current power supply voltage of devices of a control system. The current detection circuit is used for detecting current of controllers consumed at any time. The fieldbus data transmission and communication state detection circuit is used for a transmission control interface of data and instructions during normal work and simultaneously used for detecting bus running conditions and communication state in real time. The keyboard and liquid crystal display interface processing circuit is used for inquiring and displaying fault information of each controller in detail. The fault comprehensive diagnosis circuit of the hydraulic support electrohydraulic control system is capable of thoroughly making a fault comprehensive diagnosis of the underground working surface hydraulic support electrohydraulic control system, accurately judging various faults occurring in the electrohydraulic control system and fault positions and fault types in real time, and accurately giving a prompt of positions and fault types of any faults in Chinese on each controller, thereby being convenient for trouble removal and system maintenance.
Description
Technical field
The utility model relates to working surface hydraulic support electro-hydraulic control field under the mine, is specifically related to a kind of synthetic fault diagnosis circuit that is used for hydraulic support electrohydraulic control system.
Background technology
Coal industry is the important basic industry of China, and rich coal resources in China in the period of quite growing future, is that main energy supply general layout can not change with the coal.Coal in China industry " 15 " is the coal industry restructuring with the important development target in Eleventh Five-Year Plan period, implements large group's strategy, eliminates to fall behind production line, raising Coal Production technical equipment and mining mechanization degree.
According to this target call, each group of coal mining enterprise must actively push forward coal winning technology reform and technological transformation, accomplishes wall type normalization exploitation.Accelerate to promote coal production and equipment manufacturing technology level, adopt new and high technology and advanced and applicable technology, accelerate the high-yield and high-efficiency [underground.Improve colliery facility modernization, system automation, IT application in management level, eliminate backward technology equipment and technology, promote coal industry scientific-technical progress and production development.Improve research and development of coal major technologies and equipment and manufacturing capacity, promote great equipment manufacturing production domesticization, reach world-class levels as early as possible.
According to this target call; Each coal equipment manufacturing enterprise must build highly efficient and productive, safe modernized mine technology, build up a collection of with production domesticization equipment be master adopt, dig, transport, carry electromechanical integration efficiently, safety, intensification, modern production mine.Simultaneously constantly capture robotization coal-face gordian technique, the programmed control function of primary study hydraulic support, make hydraulic support can with relevant device coordinations such as coalcutter, scraper conveyer.
Hydraulic support electrohydraulic control system is a key equipment of realizing the production automation of mine fully-mechanized mining working; Utilize hydraulic support electrohydraulic control system can realize the automatic control of fully-mechanized mining working production equipment; Improve working surface production efficient, improve the working surface production condition, reach the purpose of safety in production.Quickening along with coal in China industrial structure upgrading paces; Country is about the macro adjustments and controls of coal industry and the further propelling of substantial equipment production domesticization policy; Not charged liquid control system of domestic in the past mass-produced hydraulic support or control function a little less than; Realized not comprehensive mechanization robotization coal mining, the Eleventh Five-Year Plan period domestic emphasis is developed high-end hydraulic support, and its core is an electrohydraulic control system.The fault diagnosis of working surface hydraulic support electrohydraulic control system is the gordian technique of electrohydraulic control system, is to realize the comprehensive mechanization indispensable ingredient of coal mining automatically.
A workplace has hundreds of hydraulic supports; A controller is installed on every support; A pressure transducer and corresponding cable connection assembly; A stroke sensor and corresponding cable connection assembly, an infrared ray receiving sensor and corresponding cable connection assembly, an electromagnetic valve driver and corresponding cable connection assembly.Be electrically connected with CA cable assembly between frame between each bracket controller; Be electrically connected with isolating coupler and corresponding CA cable assembly between per four bracket controllers; Be electrically connected with two-way explosion-proof electrical source, power supply adaptor and corresponding CA cable assembly between per eight bracket controllers, be electrically connected with 1～16 CA cable assembly between electromagnetic valve driver and the solenoid directional control valve group (pilot valve).
Because the colliery underground working is abominable, the erosion that bracket controller, two-way explosion-proof electrical source, power supply adaptor, isolating coupler, various sensor and various cable connection assembly often receive coal dust and moisture content is broken down.For a fully-mechanized mining working that possibly occur various faults whenever and wherever possible; If accurate judgement that can not be real-time and indicate abort situation, fault type; With the ordinary production that greatly influences workplace, also be not easy to the maintenance of force piece electric control system simultaneously.
Summary of the invention
The purpose of the utility model provides the synthetic fault diagnosis circuit of hydraulic support electrohydraulic control system; The utility model can have perfect synthetic fault diagnosis to the hydraulic support on underground working surface electrohydraulic control system; Various failure conditions, abort situation and fault type that real-time accurately the judging of ability occurs in the electrohydraulic control system; And the position and the fault type of on every controller, accurately pointing out out any fault to take place with Chinese, be convenient to fault and get rid of and system maintenance.
The technical scheme that realizes above-mentioned purpose is following:
The synthetic fault diagnosis circuit of hydraulic support electrohydraulic control system comprises: the sensor data acquisition circuit, voltage detecting circuit, current detection circuit, fieldbus data transmission and communications status testing circuit, microprocessor and keyboard and the LCD interface treatment circuit that are used for sensor data acquisition; Said sensor data acquisition circuit, voltage detecting circuit, current detection circuit are connected to the input end of microprocessor; Said fieldbus data transmission and communications status testing circuit and keyboard and LCD interface treatment circuit are connected to the output terminal of microprocessor; Whether microprocessor calculates the signal that comes from sensor data acquisition circuit, current detection circuit, voltage detecting circuit, fieldbus data transmission and communications status testing circuit, to existing fault to make judgement.
Adopted such scheme; Through the sensor data acquisition circuit; Can the open circuit and the short trouble of sensor be detected, analyzes, judge and handle and show, can detect, analyze, judge and handle the sensor short trouble of supplying power, and take the corresponding protection measure.Through voltage detecting circuit and current detecting; Can on every controller, demonstrate the current magnitude of voltage of hydraulic support electrohydraulic control system, current value in real time, make the user can both know every controller (containing corresponding peripheral device) direct current supply voltage swing and institute's consumed current size at any time at any time.Through the solenoid valve holding circuit, can detect, analyze, judge and handle the solenoid valve short trouble, and take the corresponding protection measure.Fieldbus data transmission and communications status testing circuit; To data transmission and communications status detection, analysis, judgement, processing and display circuit, can detect, analyze, judge, handle and show communication failures such as communication line open circuit, controller zero-address, controller address repeat between the data transmit-receive mistake of controller own, internal bus controller open circuit, controller bay, controller does not have network.
Description of drawings
Fig. 1 representes the utility model full face hydraulic support electrohydraulic control system synthetic fault diagnosis schematic block circuit diagram;
Fig. 2 representes the utility model separate unit controller failure comprehensive diagnos schematic block circuit diagram;
Fig. 3 representes the utility model hydraulic support electrohydraulic control system sensor data acquisition and power supply protection circuit figure;
Fig. 4 representes the utility model hydraulic support electrohydraulic control system voltage detecting circuit figure;
Fig. 5 representes the utility model hydraulic support electrohydraulic control system current detection circuit figure;
Fig. 6 representes the utility model hydraulic support electrohydraulic control system solenoid valve holding circuit figure;
Fig. 7 representes transmission of the utility model hydraulic support electrohydraulic control system fieldbus data and communications status testing circuit figure;
Fig. 8 representes the utility model separate unit controller communication failure diagnostic software process flow diagram;
Fig. 9 representes the utility model full face hydraulic support electrohydraulic control system synthetic fault diagnosis software flow pattern.
Embodiment
With reference to Fig. 1, the full face hydraulic support electrohydraulic control system is made up of hundreds of hydraulic supports, and a bracket controller, three sensors and an electromagnetic valve driver are installed on every support.Each controller adopts fieldbus to link together; Utilize each controller inner microprocessor, fault detect and treatment circuit, fieldbus data transmission and logical state letter testing circuit to realize the transmission of the detection of single frame controller failure, diagnosis and full face failure message, utilize inner keyboard of each bracket controller and LCD to realize the detailed query and the demonstration of each controller failure information.
With reference to Fig. 2, the synthetic fault diagnosis circuit of the hydraulic support electrohydraulic control system of the utility model comprises the sensor data acquisition circuit 10 that is used for sensor data acquisition; And voltage detecting circuit 20, be used to detect the size of each equipment direct current supply voltage of control system; And current detection circuit 30, be used to detect controller institute's consumed current size at any time; And fieldbus data transmission and communications status testing circuit 40, be used for the transmission control interface of normal working hours certificate and order, simultaneously bus ruuning situation and communications status are detected in real time; And solenoid valve holding circuit 50, be used for a power supply with short-circuit protection being provided to the driving of electromagnetic priority valve; And microprocessor U1, the signal that comes from sensor data acquisition circuit, current detection circuit, voltage detecting circuit, fieldbus data transmission and communications status testing circuit is calculated, to whether existing fault to make judgement; And keyboard and LCD interface treatment circuit 60, be used for the detailed query and the demonstration of each controller failure information.Below, synthetic fault diagnosis circuit and the each several part of forming the utility model is elaborated:
With reference to Fig. 3; The sensor data acquisition circuit is used for sensor data acquisition and a power supply with short-circuit protection is provided; When open sensor and short circuit, detect, analyze, judge and handle and show that the power supply protection switch breaks off when short circuit sensor, produce the protection action.Sensor data acquisition circuit 10 comprises: on-off circuit receives the conducting or the shutoff that come from microprocessor control signal control sensor data acquisition circuit; And voltage follower, after handling, the voltage that will come from sensor output outputs to microprocessor.And the power supply protection circuit that power supply is protected, this power supply protection circuit is connected between on-off circuit and the voltage follower.On-off circuit is formed by recovering insurance FR2, power switch Q11, CS Q9, resistance R 56 and resistance R 52 certainly, when the system sensor overcurrent, recovers insurance FR2 and opens circuit, and power supply is protected.Power switch Q11 (FET) and CS Q9 (FET) are controlled by microprocessor U1, CS Q9 conducting under the normal condition, so power switch Q11 is also with regard to conducting.When the controller system fault, the shutoff of microprocessor U1 output control signal control sensor data acquisition circuit.The output terminal of voltage follower U11A connects an amplitude limit stabilivolt DZ2, and the maximum that makes sensor output voltage Vi be no more than microprocessor allows input voltage.Power supply protection circuit is made up of opening resistor R64, opening resistor R65, power switch Q12 and electromagnetic priority valve short-circuit detecting switch Q16, and its circuit connecting relation is by shown in the figure.When short circuit sensor, voltage VS becomes 0V, and electromagnetic priority valve short-circuit detecting switch Q16 ends, and power switch Q12 also just ends, and power switch breaks off, and power supply is protected.During operate as normal (sensor is short circuit not), VS is greater than 0V, electromagnetic priority valve short-circuit detecting switch Q16 conducting, because of power switch Q12 also with regard to conducting.Sensor output voltage Vi outputs to microprocessor U1 behind voltage follower U11A, microprocessor U1 analyzes, calculates and judge after the voltage that collects is carried out analog to digital conversion.
With reference to Fig. 4; Voltage detecting circuit comprises the first divider resistance R89, the second divider resistance R90 and the first voltage follower U10B; The first divider resistance R89 and the second divider resistance R90 are connected between power supply and the signal ground, and the in-phase input end of the first voltage follower U10B is connected in the first divider resistance R89 and the second divider resistance R90 node place.The supply voltage VO of each DC equipment outputs to microprocessor U1 behind the first voltage follower U10B, microprocessor U1 analyzes, calculates and judge after the voltage that collects is carried out analog to digital conversion.
With reference to Fig. 5, current detection circuit comprises sampling resistor R45, current detector U9, the second voltage follower U10A, recovers insurance FR1, the first Transient Suppression Diode D10 and amplitude limit stabilivolt DZ1 certainly.Sampling resistor R45 is connected in the signal input part of current detector U9, and the output terminal of current detector U9 is connected with the input end of the second voltage follower U10A.Be connected with sampling resistor R45 from recovering insurance FR1, FR1 opens circuit when system's overcurrent, through recovering insurance FR1 certainly power supply is protected.The first Transient Suppression Diode D10 is connected between the node place and signal ground of recovering insurance FR1 and sampling resistor R45, and the first Transient Suppression Diode D10 is used to absorb the instantaneous overvoltage pulse of high-energy, and holding circuit is not damaged by instantaneous high pressure.Be provided with anti-electric voltage reverse-connection diode D1 at the front end that recovers insurance FR1 certainly.Amplitude limit stabilivolt DZ1 is connected between the output terminal and signal ground of the second voltage follower U10A, and the maximum that makes output voltage V I be no more than microprocessor allows input voltage.The course of work of current detection circuit is: be sent to current detector U9 after through sampling resistor R45 the signal of input being sampled; Handle the voltage VI that exports the back through over-current detector U9 after outputing to microprocessor U1 behind the second voltage follower U10A and carrying out analog to digital conversion, analyze, calculate and judge.
With reference to Fig. 6; The solenoid valve holding circuit comprises that first opens resistance R15, second and open and hinder R16, the first power switch Q6 and the first electromagnetic priority valve short-circuit detecting switch Q5; First opens resistance R15 and second opens between resistance R16 is connected in parallel on the source electrode of the first power switch Q6 and drains; The grid of the first power switch Q6 is connected with the drain electrode of the first electromagnetic priority valve short-circuit detecting switch Q5; The drain electrode of the first power switch Q6 is connected with the source electrode of the first electromagnetic priority valve short-circuit detecting switch Q5, the grounded-grid of the first electromagnetic priority valve short-circuit detecting switch Q5.The circuit working process of this part is: when the electromagnetic priority valve short circuit, VD becomes 0V, and the first electromagnetic priority valve short-circuit detecting switch Q5 ends, and therefore the first power switch Q6 also just ends, and power switch breaks off, and power supply is protected.During operate as normal (electromagnetic priority valve is short circuit not), VD is greater than 0V, the first electromagnetic priority valve short-circuit detecting switch Q5 conducting, and therefore the first power switch Q6 is also with regard to conducting, and power switch is connected.
With reference to Fig. 7; Fieldbus data transmission and communications status testing circuit comprise: photoelectrical coupler is used to receive and dispatch microprocessor internal CAN controller, with the antijamming capability of enhanced system; Photoelectrical coupler is two, is respectively photoelectrical coupler U3 and photoelectrical coupler U4.And the transceiver U5 that is connected in photoelectric coupler output end; Be used for the interface between CAN controller and physical bus; Further the driving force of raising system increases communication distance, strengthens to the differential transmittability of bus with to the differential receiving ability of CAN controller.Parallelly connected 2 capacitor C 17, capacitor C 19 between the CANH of transceiver U5, CANL end and ground is used for the high frequency interference on the filtering bus, prevents electromagnetic radiation.Fieldbus division terminating circuit and overvoltage pulse absorb circuit and are connected to the transceiver output terminal.Fieldbus division terminating circuit is made up of resistance R 39, resistance R 40 and capacitor C 16; One end of resistance R 39 is connected in the CANL end of transceiver U5; The other end of resistance R 39 is connected with capacitor C 16; One end of resistance R 40 is connected in the CANH of transceiver U5, and the other end of resistance R 40 is connected with capacitor C 16.Overvoltage pulse absorbs circuit to be made up of Transient Suppression Diode D11 and Transient Suppression Diode D12, is used to absorb the instantaneous overvoltage pulse of high-energy, and holding circuit is not damaged by instantaneous high pressure.
Fig. 8 has represented the utility model hydraulic support electrohydraulic control system communication failure diagnostic software process flow diagram; Communication failure mainly is meant between the inner communication failure and controller of controller itself, fault such as stube cable generation broken string between controller and the power supply adaptor (isolating coupler); The inner communication failure of controller own is meant that mainly the broken string and the fault that goes offline take place internal communication bus; Disconnection fault is meant that mainly open fault appears in the inner communication bus of controller, and the fault that goes offline is meant that mainly the transmitting-receiving fault of " can receive but can not send " or " can not receive and can not send " two kinds of situation appears in the inner bus controller of controller.The fault that goes offline might be because bus is busy causes, the fault that when bus is idle, goes offline will disappear automatically, and as can not disappear for a long time the time, then the inner bus controller of controller just has fault.
Communication failure mainly contains that zero-address, address repeat and three types of bus failures, and bus failure comprises that no network, controller go offline, controller breaks, five types on stube cable broken string etc. between stube cable broken string, controller and the power supply adaptor (isolating coupler) between the controller.Zero-address, address repetition and bus failure are detected by the communication failure trace routine together and judge; Zero-address and address repeated communications fault will be sent to every controller through bus; Therefore when these two kinds of faults, every controller all will be pointed out, and suggestion content is the same.Bus failure does not send through fieldbus, and the bus failure prompting of therefore impossible every controller is all the same.When the workplace fault get rid of and after time-delay a period of time the fault suggestion content of communication failure presenting bank refreshed.
With reference to Fig. 8, when communication failure was differentiated, every controller detected all positions of communications status buffer area, and as being complete 1 (do not contain this controller position, 0,255), then the working surface hydraulic support electrohydraulic control system does not have communication failure; As 0,255 be 1 or this controller address be 0,255, then this controling appliance has or not the address communication fault.Like this controller position is 1, and then this controller has address repeated communications fault; Be complete 0 (do not contain this controller position, 0,255) like all positions, then this TV station controller has the undesired or internal bus of transceive data no network service faults such as broken string takes place.When all positions when being not 0 entirely, then controller is differentiated to the left side (support number reduce direction) earlier, and then differentiates to the right (support number increase direction).Have 0 like the left side, this controller position, then this support left side goes offline or bus (stube cable between frame) broken string communication failure, if the left side is from 1 be 1 to this controller position entirely, then this support left side does not have communication failure.Have 0 like this controller position the right, then this support the right goes offline or bus (stube cable between frame) broken string communication failure, if the right is 1 from this controller position to tailstock controller position entirely, and the no communication failure in this support the right then.
Fig. 9 has represented the flow process of the utility model full face hydraulic support electrohydraulic control system synthetic fault diagnosis; Controller according to the utility model has comprehensive fault diagnosis functions; Be designed with current detecting, voltage detecting, fieldbus data transmission and communications status detection, solenoid valve protection; Be designed with sensor data acquisition and power supply protection; Can be to communication failure, solenoid valve short trouble, sensor fault detects and judge; And analyze accordingly and handle, can accurately detect and demonstrate controller (containing corresponding peripheral device) institute's consumed current size, direct current supply voltage swing and support number and fault type that communication failure takes place at any time.
Open sensor and short trouble will be sent to every controller through bus, and therefore the open sensor of every controller is the same with the short trouble prompting.When there are open sensor and short trouble in system; These controllers also will number send its support, and Reflector is set except self pointing out out this fault through bus; Start the inaction interval transmission timer simultaneously; The quantitative check failure condition also passes through bus and sends, and Reflector is removed automatically when fault is eliminated, and timer stops.
Communication failure adopts the mode of reporting for work to detect and judges; After system powers on; Every controller cycle property ground sends this address through fieldbus; Judge the state of a communications status buffer area at set intervals, when finding that certain state is 0, then must have the controller of a correspondence communication failure to occur.Zero-address and address repeated communications fault will be sent to every controller through bus; Therefore these communication failure suggestion contents of every controller are the same; Bus communication fault (no network, break and go offline) does not transmit through bus, and therefore the bus communication fault suggestion content of every controller maybe be different.
Claims (10)
1. the synthetic fault diagnosis circuit of hydraulic support electrohydraulic control system; It is characterized in that, comprising: the sensor data acquisition circuit, voltage detecting circuit, current detection circuit, fieldbus data transmission and communications status testing circuit, microprocessor and keyboard and the LCD interface treatment circuit that are used for sensor data acquisition; Said sensor data acquisition circuit, voltage detecting circuit, current detection circuit are connected to the input end of microprocessor; Said fieldbus data transmission and communications status testing circuit and keyboard and LCD interface treatment circuit are connected to the output terminal of microprocessor; Whether microprocessor calculates the signal that comes from sensor data acquisition circuit, current detection circuit, voltage detecting circuit, fieldbus data transmission and communications status testing circuit, to existing fault to make judgement.
2. the synthetic fault diagnosis circuit of hydraulic support electrohydraulic control system according to claim 1; It is characterized in that; Also comprise the solenoid valve holding circuit that is connected with microprocessor, be used for a power supply with short-circuit protection being provided to the driving of electromagnetic priority valve.
3. the synthetic fault diagnosis circuit of hydraulic support electrohydraulic control system according to claim 1 and 2; It is characterized in that; Said voltage detecting circuit comprises first divider resistance (R89), second divider resistance (R90) and first voltage follower (U10B); First divider resistance (R89) and second divider resistance (R90) are connected between power supply and the signal ground, and the in-phase input end of first voltage follower (U10B) is connected in first divider resistance (R89) and second divider resistance (R90) node place.
4. the synthetic fault diagnosis circuit of hydraulic support electrohydraulic control system according to claim 1 and 2; It is characterized in that; Said current detection circuit comprises sampling resistor (R45), current detector (U9), second voltage follower (U10A); Sampling resistor (R45) is connected in the signal input part of current detector (U9), and the output terminal of current detector (U9) is connected with the input end of second voltage follower (U10A).
5. the synthetic fault diagnosis circuit of hydraulic support electrohydraulic control system according to claim 4; It is characterized in that; Said current detection circuit also comprises: recover insurance (FR1), first Transient Suppression Diode (D10) and amplitude limit stabilivolt (DZ1) certainly; Be connected with sampling resistor (R45) from recovering insurance (FR1); First Transient Suppression Diode (D10) is connected between the node place and signal ground of recovering insurance (FR1) and sampling resistor (R45), and amplitude limit stabilivolt (DZ1) is connected between the output terminal and signal ground of second voltage follower (U10A).
6. the synthetic fault diagnosis circuit of hydraulic support electrohydraulic control system according to claim 2; It is characterized in that; Said solenoid valve holding circuit comprises that first opens resistance (R15), second and drive resistance (R16), first power switch (Q6) and the first electromagnetic priority valve short-circuit detecting switch (Q5); First opens resistance (R15) and second opens between the source electrode and drain electrode that resistance (R16) is connected in parallel on first power switch (Q6); The grid of first power switch (Q6) is connected with the drain electrode of the first electromagnetic priority valve short-circuit detecting switch (Q5); The drain electrode of first power switch (Q6) is connected with the source electrode of the first electromagnetic priority valve short-circuit detecting switch (Q5), the grounded-grid of the first electromagnetic priority valve short-circuit detecting switch (Q5).
7. the synthetic fault diagnosis circuit of hydraulic support electrohydraulic control system according to claim 1 and 2; It is characterized in that; Said sensor data acquisition circuit comprises: on-off circuit receives the conducting or the shutoff that come from microprocessor control signal control sensor data acquisition circuit; And
Voltage follower outputs to microprocessor after the voltage that will come from sensor output is handled.
8. the synthetic fault diagnosis circuit of hydraulic support electrohydraulic control system according to claim 7; It is characterized in that; Said sensor data acquisition circuit also comprises: the power supply protection circuit that power supply is protected, this power supply protection circuit is connected between on-off circuit and the voltage follower.
9. the synthetic fault diagnosis circuit of hydraulic support electrohydraulic control system according to claim 1 and 2 is characterized in that, fieldbus data transmission and communications status testing circuit comprise: photoelectrical coupler is used to receive and dispatch microprocessor internal CAN controller; And
Be connected in the transceiver (U5) of photoelectric coupler output end, be used for the interface between CAN controller and physical bus.
10. the synthetic fault diagnosis circuit of hydraulic support electrohydraulic control system according to claim 9; It is characterized in that; Transmission of said fieldbus data and communications status testing circuit comprise and comprise that also fieldbus division terminating circuit and overvoltage pulse absorb circuit that fieldbus division terminating circuit and overvoltage pulse absorb circuit and be connected to the transceiver output terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204140027U CN202331192U (en) | 2011-10-26 | 2011-10-26 | Fault comprehensive diagnosis circuit of hydraulic support electrohydraulic control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204140027U CN202331192U (en) | 2011-10-26 | 2011-10-26 | Fault comprehensive diagnosis circuit of hydraulic support electrohydraulic control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202331192U true CN202331192U (en) | 2012-07-11 |
Family
ID=46443166
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204140027U Expired - Fee Related CN202331192U (en) | 2011-10-26 | 2011-10-26 | Fault comprehensive diagnosis circuit of hydraulic support electrohydraulic control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202331192U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102929236A (en) * | 2012-10-26 | 2013-02-13 | 北京机械设备研究所 | Display device applicable to distributed electro hydraulic servo system |
| CN102957124A (en) * | 2012-10-15 | 2013-03-06 | 三一重型装备有限公司 | Automatic short-circuit disconnection circuit, adapter plate and electro-hydraulic controller |
| CN105717915A (en) * | 2016-03-14 | 2016-06-29 | 成都爆米花信息技术有限公司 | Data acquisition equipment with self-diagnosis function |
| CN107276394A (en) * | 2015-09-14 | 2017-10-20 | 广东欧珀移动通信有限公司 | A kind of intelligent DC conversion equipment and application system |
| WO2020147260A1 (en) * | 2019-01-18 | 2020-07-23 | 中国矿业大学 | System and method for remotely positioning hydraulic support having communication error |
| CN113325818A (en) * | 2021-04-20 | 2021-08-31 | 国家能源集团国源电力有限公司 | Test device of electro-hydraulic control system |
-
2011
- 2011-10-26 CN CN2011204140027U patent/CN202331192U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102957124A (en) * | 2012-10-15 | 2013-03-06 | 三一重型装备有限公司 | Automatic short-circuit disconnection circuit, adapter plate and electro-hydraulic controller |
| CN102957124B (en) * | 2012-10-15 | 2015-07-08 | 三一重型装备有限公司 | Adapter plate and electro-hydraulic controller |
| CN102929236A (en) * | 2012-10-26 | 2013-02-13 | 北京机械设备研究所 | Display device applicable to distributed electro hydraulic servo system |
| CN107276394A (en) * | 2015-09-14 | 2017-10-20 | 广东欧珀移动通信有限公司 | A kind of intelligent DC conversion equipment and application system |
| CN107276394B (en) * | 2015-09-14 | 2019-07-16 | Oppo广东移动通信有限公司 | A kind of intelligent DC conversion equipment and application system |
| CN105717915A (en) * | 2016-03-14 | 2016-06-29 | 成都爆米花信息技术有限公司 | Data acquisition equipment with self-diagnosis function |
| WO2020147260A1 (en) * | 2019-01-18 | 2020-07-23 | 中国矿业大学 | System and method for remotely positioning hydraulic support having communication error |
| US10830044B1 (en) | 2019-01-18 | 2020-11-10 | China University Of Mining And Technology | System and method for remotely locating communication error support for hydraulic supports |
| CN113325818A (en) * | 2021-04-20 | 2021-08-31 | 国家能源集团国源电力有限公司 | Test device of electro-hydraulic control system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202331192U (en) | Fault comprehensive diagnosis circuit of hydraulic support electrohydraulic control system | |
| CN102255330A (en) | Device and method for detecting island of micro power grid system | |
| CN204030640U (en) | Batteries novel maintenance monitoring intelligent device | |
| CN104362969B (en) | A kind of domestic solar dispatch from foreign news agency origin system | |
| CN202524167U (en) | A state detection and intelligent control device for high-voltage circuit breaker | |
| CN102780271A (en) | 3G smart monitoring terminal for connection of photovoltaic micro-network power generation system to power grid | |
| CN103676783A (en) | Monitoring system for cotton picker | |
| CN109321923B (en) | Buried long-distance pipeline cathode protection device based on STM32 single chip microcomputer | |
| CN201650334U (en) | Hydraulic support electro-hydraulic control system | |
| CN106882060A (en) | A kind of intelligent charging spot system | |
| CN201715253U (en) | Water pipe leak detection system | |
| CN202661591U (en) | Gas insulated switchgear (GIS) partial discharge monitoring and fault diagnosis system | |
| CN206460164U (en) | Radar operational factor and Collection control panel | |
| CN205123420U (en) | Long -range controlling means that reports an emergency and asks for help or increased vigilance of switching station auxiliary assembly | |
| CN202471891U (en) | DC feeder line small current grounding line selection device for DC power cabinet | |
| CN203444034U (en) | Fault diagnosis system of coal mining machine frequency converter | |
| CN202815588U (en) | Novel engine integrated measurement and control apparatus | |
| CN202431651U (en) | Integrated control device of hydraulic system | |
| CN202353178U (en) | Universal protector | |
| CN201583579U (en) | Monitoring device for monitoring electric current of solar photovoltaic panels | |
| CN202041830U (en) | System applied to monitoring real-time statuses of grounding wires of transformer substation | |
| CN216851413U (en) | General type substation equipment intelligence subassembly cabinet | |
| CN204256935U (en) | A kind of Mine-used I. S monitoring device | |
| CN219552639U (en) | Electric energy meter detection device | |
| CN201368983Y (en) | Remote monitoring device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120711 Termination date: 20151026 |
|
| EXPY | Termination of patent right or utility model |